IEventHistoVarTool Node1 IEventHistoVarTool + ~IEventHistoVarTool() + value() + varName() + interfaceID() Node3 EventHistoVarTool - m_varName - m_defaultValue - m_attName + EventHistoVarTool() + ~EventHistoVarTool() + initialize() + value() + varName() Node1->Node3 Node4 NumJetVarTool - m_ptCut - m_etCut - m_etaMin - m_etaMax - m_varName - m_failureOnMissingContainer + NumJetVarTool() + ~NumJetVarTool() + initialize() + value() + varName() Node1->Node4 Node2 IAlgTool Node2->Node1